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Testing on Turkey Slices


To define the effectiveness of the CNC and discover possible faults, we test ARTS 2.0 on turkey slices.

Since Lightburn is not made for milling with spindle, the G-code has to be post-processed through a python code as per now.

G-code post processing
def post_process_gcode(input_file, output_file):
    add_custom_command = True
    add_M5_before_M9 = True

    # Open the input file in read mode
    with open(input_file, 'r') as f:
        lines = f.readlines()

    # Open the output file in write mode
    with open(output_file, 'w') as f:
        for line in lines:
            # Check if the line is a rapid move command (G0) with Z10
            if add_M5_before_M9 == False:
                f.write(line)
            elif line.startswith('G0') and 'Z10' in line:
                # Change rapid move command to linear move (G1) with Z10
                modified_line = line.replace('G0', 'G1')
                if(add_custom_command==True):
                    for newline in lines:
                        if newline.startswith('G1'):
                            spindle_speed = "S" + newline.split('S', 1)[-1].strip()  # Extracting all characters after "S" including "S"
                            print(spindle_speed)
                            break
                    #modified_line+=spindle_speed
                    modified_line = "M3" + "\n" + modified_line.strip() + spindle_speed + "\n"
                    print(modified_line)
                f.write(modified_line)
                add_custom_command = False

            elif line.startswith('G1') and 'S' in line:
                no_spindle_g1 = newline.split('S', 1)[0].strip() + "\n" # Extracting all characters after "S" including "S"
                f.write(no_spindle_g1)
            # Check if the line is a spindle stop command (M5) or spindle start command (M3)
            elif line.startswith('M5') or line.startswith('M3'):
                # Ignore these commands until M9
                pass
            # Check if the line is the spindle stop command (M9)
            elif line.startswith('M9'):
                # Add M5 before M9
                if add_M5_before_M9:
                    f.write('M5\n')
                    add_M5_before_M9 = False
                # Write the line as it is
                f.write(line)
            else:
                # Write the line as it is
                f.write(line)

# Example usage
if __name__ == "__main__":
    input_file = 'Cutting_samples_2S_100p.gc'
    output_file = 'PP_Cutting_samples_2S_100p.gc'
    post_process_gcode(input_file, output_file)
    print("G-code post-processing complete!")


Summary

Slice Settings Status Comments Future change
1

Speed: 10mm/s

Power: 100%

Failure Too fast. Slow down
2

Speed: 2mm/s

Power: 100%

Failure Did not cut all the way through.  Lower the spindle.
3

Speed: 1mm/s

Power: 100%

Success Mill bit diameter too high Change mill bit / Raise spindle
4

Speed: 1mm/s

Power: 100%

Failure Freezer too warm, slice thawed and loosened


Slice 1: Failure

CNC cut too fast. Mill pushed the slice around slightly.


Image 




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